Monday, December 16, 2013

FeedaMail: ScienceDaily: Most Popular News

feedamail.com ScienceDaily: Most Popular News

Researchers split water into hydrogen, oxygen using light, nanoparticles

Researchers have found a catalyst that can quickly generate hydrogen from water using sunlight, potentially creating a clean and renewable source of energy. Their research involved the use of cobalt oxide nanoparticles to split water into hydrogen and oxygen.

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Deep-sea corals record dramatic long-term shift in Pacific Ocean ecosystem

Long-lived deep-sea corals preserve evidence of a major shift in the open Pacific Ocean ecosystem since around 1850, according to a new study. The findings indicate that changes at the base of the marine food web observed in recent decades in the North Pacific Subtropical Gyre may have begun more than 150 years ago at the end of the Little Ice Age.

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Nanoscale friction: High energy losses in the vicinity of charge density waves

Scientists have observed a strong energy loss caused by frictional effects in the vicinity of charge density waves. This may have practical significance in the control of nanoscale friction.

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Species diversity in coral reefs: Very similar looking coral species differ in how they survive in harsh environments

Some corals have been found to have the ability to survive in harsh environments, according to new research. The researchers report previously unrecognized species diversity that had been was hiding some corals' ability to respond to climate change.

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Income inequality rising, but maybe not as fast as you think

Americans' perceptions of income inequality are largely over-inflated when compared with actual census data, according to new research.

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Nitrogen deposition poses threat to diversity of Europe's forest vegetation

Unless nitrogen emissions are curbed, the diversity of plant communities in Europe's forests will decrease. Atmospheric nitrogen deposition has already changed the number and richness of forest floor vegetation species in European forests over the last 20-30 years. In particular, the coverage of plant species adapted to nutrient-poor conditions has reduced. However, levels of nitrogen deposition in Finnish forests remain small compared to Southern and Central Europe.

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Bonobos stay young longer

Contrary to humans and chimpanzees, bonobos retain elevated thyroid hormones well into adulthood.

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Pollination, land degradation: Top priorities for assessment by new UN intergovernmental body

Meeting in Antalya, Turkey, nations from around the world agreed Saturday to fast-track science assessments of two priority environmental issues, to include recommendations for government policy changes. The fast-track assessments of land degradation and of the impact on food production of changes in the populations of bees and other insect pollinators around the world form part of the first work program agreed upon for the new UN Intergovernmental science-policy Platform on Biodiversity and Ecosystem Services.

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Life's not a squeeze for pregnant women

Despite their changed body size, pregnant women are just as good as other people at judging whether they are able to fit through openings, such as doorways, or not. This is thanks to a process called perceptual-motor recalibration that helps people to adjust their spatial awareness of their environment based on changes in their body's size and abilities. This research is the first to report such perceptual recalibration in response to actual growth rather than on the experimentally induced manipulation of body size.

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Nanoparticles and their orbital positions

Physicists have developed a "planet-satellite model" to precisely connect and arrange nanoparticles in three-dimensional structures. Inspired by the photosystems of plants and algae, these artificial nanoassemblies might in the future serve to collect and convert energy.

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Alzheimer substance may be the nanomaterial of tomorrow

Amyloid protein causes diseases like Alzheimer's, Parkinson's and Creutzfeldt-Jakob disease. But amyloid also carries unique characteristics that may lead to the development of new composite materials for the nano processors and data storage of tomorrow, and even make objects invisible.

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No math gene: Learning mathematics takes practice

What makes someone good at math? A love of numbers, perhaps, but a willingness to practice, too. And even if you are good at one specific type of math, you can't trust your innate abilities enough to skip practicing other types if you want to be good.

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No math gene: Learning mathematics takes practice

New research shows that if you want to be good at math, you have to practice all different kinds of mathematics.

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Five most effective parenting programs to reduce problem behaviors in teens

Researchers evaluated about 20 parenting programs and found five that are especially effective at helping parents and children at all risk levels avoid adolescent behavior problems that affect not only individuals, but entire communities.

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Climate change threatens genetic diversity, future of world's caribou

Caribou in southern and eastern Canada may disappear from most of their current range in 60 years if climate change takes the toll on their habitat that scientists predict. Scientists looked at reservoirs of genetic diversity in caribou and whether that diversity was linked to stable habitats.

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Timing is everything in new nanotechnology for medicine, security and research

A team of researchers has created a way to control the length of time light from a luminescent nanocrystal lingers, adding a new dimension of time to color and brightness in optical detection technology. This exponentially boosts the number of different combinations that can be created and used as unique tags for biomedical screens. In addition, light emitted by the new nanocrystals far outlasts that which occurs naturally in biological systems. That difference in timing distinctly separates the signal from background noise.

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Green innovator: Turning chicken feathers and plant fiber into eco-leather, bio-based circuit boards

A scientist is turning materials like chicken feathers, vegetable oil, and plant fiber into such green innovations as eco-leather and bio-based circuit boards.

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A Terahertz generator with the highest signal quality

Researchers are developing an innovative Terahertz generator that improves signal quality by one million times as compared to the best device of this kind currently on the market; it will allow this technology to be applied in the areas of biomedicine, transportation safety, industry and radio astronomy, among others.

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Swift satellite catches a hundred thousand new cosmic X-ray sources

Astronomers have published a major list of celestial X-ray sources. The result of many years work, this list of over 150,000 high-energy stars and galaxies will be a vital resource for future astronomical studies.

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The colors of nature: Nine beautiful new wasp species from China

The first revision of the cuckoo wasp genus Cleptes from China has brought to light nine new gorgeously colored species from the genus. The genus is part of the engaging Chrysididae wasp family, known for their bright metallic body colors and their peculiar parasitizing and defensive mechanisms.

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Scientists discover potential vaccine for malaria

Scientists have discovered a key process during the invasion of the blood cell by the Malaria parasite, and more importantly, found a way to block this invasion.

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Brittle-bone babies helped by fetal stem cell grafts

Osteogeneis imperfecta (OI) is a congenital bone disease that causes stunted growth and repeated, painful fracturing. Ultrasound scans can reveal fractures already in the fetus, and now an international team of researchers has treated two babies in utero by injecting bone-forming stem cells.

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Better first response medical care during catastrophes

When large-scale emergencies occur, it often takes far too long before victims receive the care their injuries demand. Now a new electronic system has been designed to support helpers during the initial assessment of victims and to speed up patient care.

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Molecular toolkit for gene silencing

Researchers have managed to overcome remaining key limitations of RNA interference (RNAi) - a unique method to specifically shut off genes. By using an optimized design, the scientists were able to inhibit genes with greatly enhanced efficiency and accuracy. The new method facilitates the search for drug targets and improves the interpretation of experimental results.

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Health spending more efficient for men than women

Health care spending is a large – and ever increasing - portion of government budgets. Improving its efficiency has therefore become critically important. In the first-ever study to estimate health spending efficiency by gender across 27 industrialized nations, researchers discovered significant disparities within countries, with stronger gains in life expectancy for men than for women in nearly every nation.

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